CVE-2026-66786

medium Red Hat
CVSS v3 Base Score
9.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Published: August 21, 2026 (16 days ago)
Last Modified: August 21, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in submariner. In cert-auth mode, the connection configuration is built using free-form strings from the Custom Resource Definition (CRD) without proper validation. A malicious cluster can exploit this by publishing a CableName that includes newlines and ipsec.conf directives. This allows an attacker to inject arbitrary configuration parameters or execute commands through leftupdown hooks, leading to remote code execution as root on the gateway node.

CWE

CWE-94

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov